To start, buy 2 Mann.Co supply crate keys from the Mann co store if you don't have tf2 premium. If you do have tf2 premium then get the keys on Marketplace.tf, also EVERYONE IN THE TF2 COMMUNITY DO NOT USE THE MANN.CO/IN-GAME STORE. Seriously they price a couple weapons at $30!!. You can get an unusual with that money man it's crazy.

Go to Scrap.tf and trade the keys for refined metal on Scrap.tf. This is because keys are worth about 40-50 as of now.

Buy weapons from Scrap.tf from the weapons page, this will give you ALL weapons(if they have them In stock). Yes you heard me right folks EVERY SINGLE ONE OF THEM (if they have them in stock). There is a button that will give you all weapons that you don’t currently have for about 6-8 refined metals (caution, it may cost more because there are 160 weapons in the game but scrap.tf may not have every weapons in stock. according to my math every refined has nine scrap and every scrap is worth 2 weapons. 6 X 9=54 54 X 2= 102, which is 102 of the 160 weapons (including reskins).

With 40 refined and a key you can get a loadout for all nine classes! Also please use backpack.tf, don't get scammed.

Two other great sites are Loadout.tf for testing how cosmetics look before you buy them, and Backpack.tf so you can check prices on certain items like stranges or skins so you get your money’s worth. Speaking of money's worth if your saying but Dirtsnub, I cant get this stuff because the I don't have keys, AND i have premium already. Well buy some on marketplace.tf, they're way cheaper and are tradeable instantly after you buy them, unlike a certain shop where you can get them *cough* mann.co store & community market *cough*. Another good thing to know is that backpack expanders are a godsend, please use them if you can that extra backpack space really comes in handy
Value table:
1. Keys, they cost about 46 refined metal
2. Metals, refined is worth 3 reclaimed, reclaimed is worth 3 scrap, & a scrap is worth 2 weapons.
3. weapons, weapons are WORTHLESS it takes 18 weapons to make just a single refined and a refined is like 5 cents.